08-24-05 10:52 PM
Bandwidth
------------------------
56k =3D 4.7kb per second
Audio Bandwidth
------------------------
Mic Rate | Sampling Rate | Data Rate
--------------------------------------------------
5 5.512 kHz 1378 bytes/sec
8 8.000 kHz 2,000 bytes/sec
11 11.025 kHz 2756 bytes/sec
22 22.050 kHz 5,513 bytes/sec
44 44.100 kHz 11,025 bytes/sec
Audio is non-negotiable since no compression available.
Options
--------
(rounding down)
Microphone.setRate(5); // 4.7 - 1.3 =3D 3.4 left
Camera.setQuality(3400, 0);
OR:
-- no audio --
Camera.setQuality(4700, 0);
this was found at http://chattyfig.figleaf.com/mailma...g/flashcomm/20=
03-June/008789.html
and I believe is in macromedias tech notes as well.
=20
cheers
Andreas R=F8nning <andreas.ronning-iQmEOFY8ZWw@public.gmane.org> wrote:
Anyone got charts as to how much bandwidth is used by an active=20
microphone over one second at 8,11,22 and 44khz? Trying to balance=20
quality against the bandwidth use of a user's camera.
What codec does flash compress audio with? ADPCM?
- A
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